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Commit dbece37a authored by Marcel Holtmann's avatar Marcel Holtmann Committed by Johan Hedberg
Browse files

Bluetooth: Add support for Set External Configuration management command 



The Set External Configuration management command allows for switching
between configured and unconfigured start if HCI_QURIK_EXTERNAL_CONFIG
is set by the transport driver.

Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: default avatarJohan Hedberg <johan.hedberg@intel.com>
parent 0ad184ef

include/net/bluetooth/hci.h

+1 −0
Original line number Diff line number Diff line
@@ -173,6 +173,7 @@ enum { 
	HCI_UNREGISTER,

	HCI_UNCONFIGURED,

	HCI_USER_CHANNEL,

	HCI_EXT_CONFIGURED,



	HCI_LE_SCAN,

	HCI_SSP_ENABLED,

include/net/bluetooth/mgmt.h

+6 −0
Original line number Diff line number Diff line
@@ -483,6 +483,12 @@ struct mgmt_rp_read_config_info { 
	__le32	missing_options;

} __packed;



#define MGMT_OP_SET_EXTERNAL_CONFIG	0x0038

struct mgmt_cp_set_external_config {

	__u8 config;

} __packed;

#define MGMT_SET_EXTERNAL_CONFIG_SIZE	1



#define MGMT_EV_CMD_COMPLETE		0x0001

struct mgmt_ev_cmd_complete {

	__le16	opcode;

net/bluetooth/mgmt.c

+75 −2
Original line number Diff line number Diff line
@@ -91,6 +91,7 @@ static const u16 mgmt_commands[] = { 
	MGMT_OP_LOAD_CONN_PARAM,

	MGMT_OP_READ_UNCONF_INDEX_LIST,

	MGMT_OP_READ_CONFIG_INFO,

	MGMT_OP_SET_EXTERNAL_CONFIG,

};



static const u16 mgmt_events[] = {
@@ -441,11 +442,25 @@ static int read_unconf_index_list(struct sock *sk, struct hci_dev *hdev, 
	return err;

}



static bool is_configured(struct hci_dev *hdev)

{

	if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) &&

	    !test_bit(HCI_EXT_CONFIGURED, &hdev->dev_flags))

		return false;



	if (test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks) &&

	    !bacmp(&hdev->public_addr, BDADDR_ANY))

		return false;



	return true;

}



static __le32 get_missing_options(struct hci_dev *hdev)

{

	u32 options = 0;



	if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks))

	if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) &&

	    !test_bit(HCI_EXT_CONFIGURED, &hdev->dev_flags))

		options |= MGMT_OPTION_EXTERNAL_CONFIG;



	if (test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks) &&
@@ -455,6 +470,14 @@ static __le32 get_missing_options(struct hci_dev *hdev) 
	return cpu_to_le32(options);

}



static int send_options_rsp(struct sock *sk, u16 opcode, struct hci_dev *hdev)

{

	__le32 options = get_missing_options(hdev);



	return cmd_complete(sk, hdev->id, opcode, 0, &options,

			    sizeof(options));

}



static int read_config_info(struct sock *sk, struct hci_dev *hdev,

			    void *data, u16 data_len)

{
@@ -5355,6 +5378,54 @@ static int load_conn_param(struct sock *sk, struct hci_dev *hdev, void *data, 
	return cmd_complete(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM, 0, NULL, 0);

}



static int set_external_config(struct sock *sk, struct hci_dev *hdev,

			       void *data, u16 len)

{

	struct mgmt_cp_set_external_config *cp = data;

	bool changed;

	int err;



	BT_DBG("%s", hdev->name);



	if (hdev_is_powered(hdev))

		return cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG,

				  MGMT_STATUS_REJECTED);



	if (cp->config != 0x00 && cp->config != 0x01)

		return cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG,

				    MGMT_STATUS_INVALID_PARAMS);



	if (!test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks))

		return cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG,

				  MGMT_STATUS_NOT_SUPPORTED);



	hci_dev_lock(hdev);



	if (cp->config)

		changed = !test_and_set_bit(HCI_EXT_CONFIGURED,

					    &hdev->dev_flags);

	else

		changed = test_and_clear_bit(HCI_EXT_CONFIGURED,

					     &hdev->dev_flags);



	err = send_options_rsp(sk, MGMT_OP_SET_EXTERNAL_CONFIG, hdev);

	if (err < 0)

		goto unlock;



	if (!changed)

		goto unlock;



	if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags) == is_configured(hdev)) {

		mgmt_index_removed(hdev);

		change_bit(HCI_UNCONFIGURED, &hdev->dev_flags);

		mgmt_index_added(hdev);

	}



unlock:

	hci_dev_unlock(hdev);

	return err;

}



static const struct mgmt_handler {

	int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,

		     u16 data_len);
@@ -5417,6 +5488,7 @@ static const struct mgmt_handler { 
	{ load_conn_param,        true,  MGMT_LOAD_CONN_PARAM_SIZE },

	{ read_unconf_index_list, false, MGMT_READ_UNCONF_INDEX_LIST_SIZE },

	{ read_config_info,       false, MGMT_READ_CONFIG_INFO_SIZE },

	{ set_external_config,    false, MGMT_SET_EXTERNAL_CONFIG_SIZE },

};



int mgmt_control(struct sock *sk, struct msghdr *msg, size_t msglen)
@@ -5469,7 +5541,8 @@ int mgmt_control(struct sock *sk, struct msghdr *msg, size_t msglen) 
		}



		if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags) &&

		    opcode != MGMT_OP_READ_CONFIG_INFO) {

		    opcode != MGMT_OP_READ_CONFIG_INFO &&

		    opcode != MGMT_OP_SET_EXTERNAL_CONFIG) {

			err = cmd_status(sk, index, opcode,

					 MGMT_STATUS_INVALID_INDEX);

			goto done;